Strange radio problem with certain pedals

So, I'm having a weird problem with my practice amp. When I have either my Big Muff or my wah pedal engaged, the sound of radio broadcasts(a little music, voices) comes through the amp. Anyone have an idea what might be causing that?

sheilding issue, most likely caused by the inductor in your wah and amplified by by the big muff, basically you`ve created a shortwave radio, look at better sheilded patch cables and if the problem persists look at various shielding remedies that you can apply to the pedals.